Total 50,611 skills, Backend Development has 4144 skills
Showing 12 of 4144 skills
Ktor server patterns including routing DSL, plugins, authentication, Koin DI, kotlinx.serialization, WebSockets, and testApplication testing.
Diagnose and fix excessive Postgres egress (network data transfer) in a codebase. Use when a user mentions high database bills, unexpected data transfer costs, network transfer charges, egress spikes, "why is my Neon bill so high", "database costs jumped", SELECT * optimization, query overfetching, reduce Neon costs, optimize database usage, or wants to reduce data sent from their database to their application. Also use when reviewing query patterns for cost efficiency, even if the user doesn't explicitly mention egress or data transfer.
Analyze application logs from the .evlog/logs/ directory. Use when debugging errors, investigating slow requests, understanding request patterns, or answering questions about application behavior. Reads structured NDJSON wide events written by evlog's file system drain.
Debugging optimized builds skill for diagnosing issues in release code. Use when debugging RelWithDebInfo builds, using -Og for debuggable optimization, working with split-DWARF, applying GDB scheduler-locking, reading inlined frames, or understanding "value optimized out" messages. Activates on queries about debugging optimized code, RelWithDebInfo, -Og, inlined functions in GDB, value optimized out, GDB with -O2, or debugging release builds.
Complete Drift Protocol SDK for building perpetual futures, spot trading, and DeFi applications on Solana. Use when building trading bots, integrating Drift markets, managing positions, or working with vaults.
Apply Fastify best practices when creating servers, plugins, routes, schemas, hooks, configuration, decorators, error handling, testing, and TypeScript integration. Use when writing or reviewing Fastify code, setting up a new Fastify project, or asking "How should I structure my Fastify app?"
This skill should be used when the user asks to "build a Flet app", "create a Python GUI", "use Flet framework", "write a Flet control", or needs guidance on cross-platform Python UI development with Flet.
Use when declaring or initializing Go variables, constants, structs, or maps — including var vs :=, reducing scope with if-init, formatting composite literals, designing iota enums, and using any instead of interface{}. Also use when writing a new struct or const block, even if the user doesn't ask about declaration style. Does not cover naming conventions (see go-naming).
Framework for deciding whether to keep a Solana program upgradeable or make it immutable, including trust, operations, and governance tradeoffs. Use before deployment or key rotation.
Master Jito bundles for MEV protection and priority fee optimization on Solana - bundle submission, tip strategies, and transaction landing. Use for trading bots, high-priority transactions, and MEV-aware applications.
Implement property editor UIs in Umbraco backoffice using official docs
Real-time data streaming with SSE, WebSockets, and ReadableStream. Use when implementing streaming responses, real-time data updates, Server-Sent Events, WebSocket setup, live notifications, push updates, or chat server backends.